Application of variable frequency in diammonium phosphate dryers
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I’ve seen in some materials that variable frequency systems are required for diammonium phosphate dryers to facilitate operation. Dear colleagues, do your units use variable frequency systems for the diammonium phosphate dryers? Our device doesn’t have up-conversion; we plan to install one. I wonder how things are with everyone else?
It’s not necessary; a hydraulic coupling is sufficient to prevent damage to the motor. Spin the shaft manually before starting the machine.
Generally, there isn’t, right? What is the purpose?
Whether to use variable frequency control on DAP dryers depends on the specific conditions of each enterprise. If the moisture content before drying fluctuates frequently and significantly, then it is advisable to use such control; if the levels are relatively stable, then it is not necessary. After all, this is a considerable investment.
It can protect the motor and is relatively safe!